Switching time adjustable solid state relay

• Optical isolation and non-isolation between input and output circuits.
• Light Emitting Diodes (LEDs) indicate the on and off status separately.
• The timing of the switch can be adjusted arbitrarily within a specified range.
• The GAT14 model features a thyristor (SCR) output with zero current turn-off.
• The GAT06 model has a transistor output, which provides fast switching speeds and a low on-state voltage drop.
• The products are mainly used for automatic timing switch control in industrial automation, advertising lights, solenoid valves, electromagnetic clutches, and similar applications.

1. Current Margin Selection Based on Load Power:

   • The larger the power of the load, the greater the current margin should be. Typically, the current capacity of a solid-state relay (SSR) is selected to be 2.5 to 5 times the load current.

2. Protection Measures in the Output Circuit:

   • Overvoltage Protection: Use a varistor. For a 440VAC SSR, select a varistor rated between 470V to 680V, and for a 660VAC SSR, choose between 1100V to 1200V.
   • Overcurrent Protection: Incorporate a quick-acting circuit breaker or fast-acting fuse in the main circuit.

3. Heat Sink Selection:

   • The choice of heat sink should vary according to the SSR's current rating, mode of operation, and environmental conditions. It is better to choose a heat sink with a larger surface area rather than one that is too small.

4. Input Control Terminal Wiring:

   • Pay attention to the voltage level and polarity when wiring the input control terminal of the SSR. If the actual control voltage is higher than the rated voltage, a resistor can be connected in series in the control circuit to ensure that the control current is higher than the minimum required to turn on the SSR.

5. Adjustment of the Time-Setting Potentiometer:

   • Adjustments to the time-setting potentiometer should be made slowly. Avoid applying excessive force at the start or end points to prevent damage to the components.